CN110460116A - The method and system of new energy participation transient rotor angle stability emergent control - Google Patents
The method and system of new energy participation transient rotor angle stability emergent control Download PDFInfo
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- CN110460116A CN110460116A CN201910807477.3A CN201910807477A CN110460116A CN 110460116 A CN110460116 A CN 110460116A CN 201910807477 A CN201910807477 A CN 201910807477A CN 110460116 A CN110460116 A CN 110460116A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/46—Controlling of the sharing of output between the generators, converters, or transformers
- H02J3/48—Controlling the sharing of the in-phase component
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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Abstract
The invention discloses the method and system that a kind of new energy participates in transient rotor angle stability emergent control, emergent control performance Index Calculation is carried out to the new energy station for participating in transient rotor angle stability emergent control, new energy station is grouped according to emergent control performance indicator, and determine the priority of every group of active excision, pass through iterative calculation, search the new energy station feeder line excision optimum combination for meeting transient rotor angle stability requirement, realize the method that new energy station participates in transient rotor angle stability emergent control, the Transient angle stability of power grid after failure is ensured by excision new energy station feeder line, its Optimal Decision-making space is huge.
Description
Technical field
The present invention relates to the method and system that a kind of new energy participates in transient rotor angle stability emergent control, belong to power grid security
Stable analysis and control technical field.
Background technique
Safety stabilization control system cuts machine, cutting load and urgent modulation after detecting electric network fault, to power grid implementation
HVDC power etc. controls the security and stability to ensure power grid.Existing transient rotor angle stability emergency control policy is directed to cut off
Conventional generator, it is grid-connected with extensive new energy, lack extensive new energy station and participate in transient rotor angle stability and promptly controls
The method of system.
Summary of the invention
The present invention provides the method and system that a kind of new energy participates in transient rotor angle stability emergent control, solve background
The problem of being disclosed in technology.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
The method that new energy participates in transient rotor angle stability emergent control, including,
Obtain the new energy station for participating in transient rotor angle stability emergent control；
New energy station is calculated to the emergent control performance indicator of transient rotor angle stability；
According to emergent control performance indicator and preset rules, new energy station is grouped, determines the excellent of every group of active excision
First grade；
Calculate the initial active resection section of new energy station；
According to active resection section and active excision priority, the excision combination of several new energy stations feeder line is obtained, if
Meet the active resection minimum value of transient rotor angle stability requirement and is unsatisfactory for the active resection of transient rotor angle stability requirement most
The difference of big value is less than the computational accuracy of setting, then by the corresponding new energy station feeder line excision group cooperation of active resection minimum value
It cuts off and combines for optimal feeder line；Otherwise active resection section is iterated to calculate, this step is repeated.
It obtains and participates in the process of new energy station of transient rotor angle stability emergent control and be,
Power grid transient rotor angle stability quantitative evaluation is carried out, transient rotor angle stability nargin and generator dominant pattern are obtained；
It is less than or equal to 0 in response to transient rotor angle stability nargin, determines the corresponding oscillation center position of generator dominant pattern；
The branch combinations of branch composition where obtaining oscillation center position；
Using branch combinations as cut set, connected network where generator in the neck pre-group of generator dominant pattern is obtained；
The new energy station for participating in transient rotor angle stability emergent control is obtained from connected network.
Emergent control performance Index Calculation formula is,
Wherein, N is the new energy station set for participating in transient rotor angle stability emergent control, aiIt is new energy station i to temporary
The emergent control performance indicator of state angle stability, G are generator collection in the neck pre-group of generator dominant pattern, γjFor power generation
The participation factor of machine j, zj,iFor the electrical distance between new energy station i grid entry point and generator j node.
New energy station rule of classification is,
Wherein, N is the new energy station set for participating in transient rotor angle stability emergent control, ai1、ai2、ai3Respectively new energy
For source station i1, i2, i3 to the emergent control performance indicator of transient rotor angle stability, α is parameter；
The new energy station for meeting above-mentioned formula is divided into one group, and ungratified new energy station is used as alone one group respectively；
According to the size of emergent control performance indicator, new energy station group is ranked up, emergent control performance indicator is big
The active excision priority of new energy station group it is high.
Initial active resection interval computation formula is,
Wherein, Pul、PllThe upper and lower limit in respectively active resection section, b are setup parameter, PmaxTo participate in transient state function
The active excision total amount in new energy station of emergent control is stablized at angle, and η is transient rotor angle stability nargin, AincFor acceleration corresponding with η
Area, if retardation area corresponding with η is greater than 0, tdFor the corresponding duration of retardation area, otherwise tdTo accelerate area corresponding
Duration.
Obtaining the combined detailed process of optimal feeder line excision is,
S1 uniform stepping) is carried out to active resection section, according to active excision priority, active by each gear is cut
Except amount is converted into the excision combination of new energy station feeder line；
S2) meter and the excision combination of new energy station feeder line, to power grid transient rotor angle stability quantitative evaluation；
S3 it) is unsatisfactory for transient rotor angle stability requirement in response to all assessment results, adjusts active resection section, it will be active
The resection section upper limit goes to step S1 as new active resection interval limit；
Meet transient rotor angle stability requirement in response to all assessment results, adjust active resection section, by active excision
Interval limit is measured as the new active resection section upper limit, goes to step S1
In response to meeting the active resection minimum value of transient rotor angle stability requirement in all assessment results and being unsatisfactory for temporarily
The difference for the active resection maximum value that state angle stability requires is less than the computational accuracy of setting, and active resection minimum value is corresponding
New energy station feeder line excision combination is as the excision combination of optimal feeder line；
In response to meeting the active resection minimum value of transient rotor angle stability requirement in all assessment results and being unsatisfactory for temporarily
The difference for the active resection maximum value that state angle stability requires adjusts active resection section not less than the computational accuracy of setting,
Using active resection minimum value as the new active resection section upper limit, cut active resection maximum value as newly active
Except amount interval limit, step S1 is gone to.
Stepping process is,
IfGreater than εp, then by [Pul,Pll] it is uniformly divided into n-1 shelves, total n gear, otherwise by [Pul,Pll]
It is even to be divided intoShelves, altogetherA gear；Wherein, Pul、PllRespectively active resection
The upper and lower limit in section, εpFor preset active excision accuracy of measurement.
Active resection is converted into the combined process of new energy station feeder line excision,
If active resection PcIt is equal toThen by active excision priority institute in first m of new energy station group
There is the feeder line for participating in transient rotor angle stability emergent control as PcCorresponding new energy station feeder line excision combination, wherein Pi′For
New energy station group i ' is used for the active excision total amount of transient rotor angle stability emergent control；
IfBy active excision priority all participations in first m of new energy station group
The feeder line combination of transient rotor angle stability emergent control is denoted as M0, by majorized function obtain in m+1 new energy station groups withCorresponding new energy station feeder line excision combination M1, M0And M1For PcCorresponding new energy station feeder line excision group
It closes,
Majorized function formula is,
Wherein, Km+1For new energy station number in m+1 new energy station groups, JkFor in m+1 new energy station groups
K-th of new energy station is used for the feeder line number of transient rotor angle stability emergent control, Pm+1,k,j′For in m+1 new energy station groups
K-th of new energy station is used for active, the l of jth ' a feeder line of transient rotor angle stability emergent controlm+1,k,j′It indicates whether to cut off
K-th of new energy station is used for jth ' a feeder line ginseng of transient rotor angle stability emergent control in m+1 new energy station groups
Number is equal to 1, indicates excision, is equal to 0, expression is not cut off, Pm+1,minFor all new energy fields in m+1 new energy station groups
The active minimum value of feeder line stood for transient rotor angle stability emergent control.
The process of step S3 is,
It is respectively less than in response to all transient rotor angle stability nargin that assessment obtains and is equal to 0 and PulNot equal to Pmax, enable Pul'=
min[Pmax,(2Pul-Pll)]、P′ll=Pul, use Pul′、Pll' P is updated respectivelyul、Pll, go to step S1；
All transient rotor angle stability nargin obtained in response to assessment are all larger than 0, enable Pul'=Pll、Pul'=max [0,
(2Pll-Pul)], use Pul′、Pll' P is updated respectivelyul、Pll, go to step S1；
It is less than or equal to 0, partially larger than 0 in response to the transient rotor angle stability nargin part that assessment obtains, by PulIt is set to transient state
Angle stability nargin is greater than active resection minimum value in the excision combination of 0 corresponding new energy station feeder line, by PllIt is set to transient state
Active resection maximum value in the 0 corresponding new energy station feeder line excision combinations such as angle stability nargin is less than, if (Pul-Pll)
< εp, then by PllOtherwise corresponding new energy station feeder line excision combination goes to step S1 as the excision combination of optimal feeder line；Its
Middle εpFor preset active excision accuracy of measurement.
The system of new energy participation transient rotor angle stability emergent control, it is characterised in that: including,
New energy station obtains module: obtaining the new energy station for participating in transient rotor angle stability emergent control；
Emergent control performance Index Calculation module: it calculates new energy station and the emergent control performance of transient rotor angle stability is referred to
Mark；
Grouping module: according to emergent control performance indicator and preset rules, being grouped new energy station, determine every group it is active
The priority of excision；
Initial module: it calculates new energy station and participates in the initial active resection section of transient rotor angle stability emergent control；
Optimal feeder line excision combination determining module: it according to active resection section and active excision priority, obtains several
New energy station feeder line excision combination, if meeting the active resection minimum value of transient rotor angle stability requirement and being unsatisfactory for transient state function
The difference of the active resection maximum value of angle stability requirement is less than the computational accuracy of setting, then active resection minimum value is corresponding
New energy station feeder line excision combination is as the excision combination of optimal feeder line；Otherwise active resection section is iterated to calculate, this is repeated
Module process.
Advantageous effects of the invention: the present invention to participate in transient rotor angle stability emergent control new energy station into
Row emergent control performance Index Calculation is grouped new energy station according to emergent control performance indicator, and determines every group and active cut
The priority removed searches the new energy station feeder line excision optimal set for meeting transient rotor angle stability requirement by iterative calculation
It closes, realizes the method that new energy station participates in transient rotor angle stability emergent control, protected by excision new energy station feeder line
The Transient angle stability of power grid, Optimal Decision-making space are huge after barrier failure.
Detailed description of the invention
Fig. 1 is flow chart of the invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, the method that new energy participates in transient rotor angle stability emergent control, comprising the following steps:
Step 1, the new energy station for participating in transient rotor angle stability emergent control is obtained.
Detailed process is as follows for step 1:
11) grid operation mode is set as S0, for S0, using the extended equal area criterion based on electromechanical transient time-domain-simulation
It is leading to obtain transient rotor angle stability nargin, generator for power grid transient rotor angle stability quantitative evaluation after carrying out forecast failure generation
Mode, generator participate in the factor, accelerate area and its corresponding duration, retardation area and its corresponding duration.
By generating set in the neck pre-group of generator dominant pattern at set be denoted as G, obtained under S0 using Load flow calculation
Operation of power networks state S1 after forecast failure generation, the transient rotor angle stability emergent control measure after forecast failure under S0 is occurred
The set C of composition is set to empty set.
If 12) transient rotor angle stability nargin is less than or equal to 0, oscillation center localization method is used, is determined and power generation owner
The corresponding oscillation center position of waveguide mode, the branch combinations of branch composition, are defined as in oscillation where obtaining oscillation center position
The heart is associated with section, is denoted as T；Otherwise, transient rotor angle stability emergent control is not needed, this method is terminated.
13) it is directed to S1, the connected network in G where generator is obtained by cut set of T, is denoted as A, will obtain and be participated in temporarily in A
The new energy station of state angle stability emergent control, the set of composition are denoted as N.
Step 2, if N non-empty, according in new energy station grid node in N and G between generator node electrical distance,
The participation factor of generator in G calculates new energy station to the emergent control performance indicator of transient rotor angle stability；Otherwise it is assumed that
Transient angle stability can not be ensured by carrying out control to new energy station, terminate this method.
Emergent control performance Index Calculation formula:
Wherein, aiIt is new energy station i to the emergent control performance indicator of transient rotor angle stability, γjFor the ginseng of generator j
With the factor, zj,iFor the electrical distance between new energy station i grid entry point and generator j node.
Step 3, according to emergent control performance indicator and preset rules, new energy station in N is grouped, according to urgent
The size of Control performance standard is ranked up new energy station group, determines the priority of every group of active excision；Under normal circumstances
The active excision priority of the big new energy station group of emergent control performance indicator is high.
New energy station rule of classification is as follows:
Wherein, ai1、ai2、ai3Respectively new energy station i1, i2, i3 refer to the emergent control performance of transient rotor angle stability
Mark, α are big 0 parameter less than 1 of setting, generally take 0.1；
The new energy station for meeting above-mentioned formula is divided into one group, and ungratified new energy station is used as alone one group respectively.
Step 4, the initial active resection section of new energy station is calculated.
According to transient rotor angle stability nargin, accelerate area and its corresponding duration, retardation area and its corresponding duration, meter
It calculates new energy station and participates in the initial active resection section of transient rotor angle stability emergent control.
Initial active resection interval computation formula:
Wherein, Pul、PllThe upper and lower limit in respectively active resection section, b be setting be greater than 0 parameter less than 1, one
As take 0.2, PmaxFor the active excision total amount in new energy station for participating in transient rotor angle stability emergent control, η is transient rotor angle stability
Nargin, value interval are [- 1,1], AincFor acceleration area corresponding with η, if retardation area corresponding with η is greater than 0, tdFor
The corresponding duration of retardation area, otherwise tdTo accelerate the corresponding duration of area.
Step 5, according to active resection section and active excision priority, several new energy station feeder line excision groups are obtained
It closes, if meeting the active resection minimum value of transient rotor angle stability requirement and being unsatisfactory for the active excision of transient rotor angle stability requirement
The difference for measuring maximum value is less than the computational accuracy of setting, then by the corresponding new energy station feeder line excision group of active resection minimum value
Cooperation is the excision combination of optimal feeder line；Otherwise active resection section is iterated to calculate, this step is repeated.
Detailed process is as follows for step 5:
51) meter and active resection required precision carry out uniform stepping to active resection section, excellent according to active excision
The active resection of each gear is converted into the excision combination of new energy station feeder line by first grade.
In stepping process, the new energy station feeder line of preferential excision sequence preceding new energy station group, for belonging to
Same group of new energy station in active resection account under S0 its it is grid-connected it is active can the most close criterion of ratio of resection presented
Line combination crosses according to minimum and cuts the feeder line excision that active resection corresponding to each gear is converted into new energy station by criterion
Combination, specific as follows:
IfGreater than εp, then by [Pul,Pll] it is uniformly divided into n-1 shelves, total n gear, otherwise by [Pul,Pll]
It is even to be divided intoShelves, altogetherA gear, wherein εpFor preset active resection essence
Degree.
It is as follows that active resection is converted into the combined process of new energy station feeder line excision:
If active resection PcIt is equal toThen by active excision priority institute in first m of new energy station group
There is the feeder line for participating in transient rotor angle stability emergent control as PcCorresponding new energy station feeder line excision combination, wherein Pi′For
New energy station group i ' is used for the active excision total amount of transient rotor angle stability emergent control；
IfBy active excision priority all participations in first m of new energy station group
The feeder line combination of transient rotor angle stability emergent control is denoted as M0, by majorized function obtain in m+1 new energy station groups withCorresponding new energy station feeder line excision combination M1, M0And M1For PcCorresponding new energy station feeder line excision group
It closes,
Majorized function formula is,
Wherein, Km+1For new energy station number in m+1 new energy station groups, JkFor in m+1 new energy station groups
K-th of new energy station is used for the feeder line number of transient rotor angle stability emergent control, Pm+1,k,j′For in m+1 new energy station groups
K-th of new energy station is used for active, the l of jth ' a feeder line of transient rotor angle stability emergent controlm+1,k,j′It indicates whether to cut off
K-th of new energy station is used for jth ' a feeder line ginseng of transient rotor angle stability emergent control in m+1 new energy station groups
Number is equal to 1, indicates excision, is equal to 0, expression is not cut off, Pm+1,minFor all new energy fields in m+1 new energy station groups
The active minimum value of feeder line stood for transient rotor angle stability emergent control.
52) meter and the excision combination of new energy station feeder line, to power grid transient rotor angle stability quantitative evaluation.
53) it is unsatisfactory for transient rotor angle stability requirement in response to all assessment results, adjusts active resection section, it will be active
The resection section upper limit goes to step 51 as new active resection interval limit；
Meet transient rotor angle stability requirement in response to all assessment results, adjust active resection section, by active excision
Interval limit is measured as the new active resection section upper limit, goes to step 51
In response to meeting the active resection minimum value of transient rotor angle stability requirement in all assessment results and being unsatisfactory for temporarily
The difference for the active resection maximum value that state angle stability requires is less than the computational accuracy of setting, and active resection minimum value is corresponding
New energy station feeder line excision combination is as the excision combination of optimal feeder line；
In response to meeting the active resection minimum value of transient rotor angle stability requirement in all assessment results and being unsatisfactory for temporarily
The difference for the active resection maximum value that state angle stability requires adjusts active resection section not less than the computational accuracy of setting,
Using active resection minimum value as the new active resection section upper limit, cut active resection maximum value as newly active
Except amount interval limit, step 51 is gone to.
Several transient rotor angle stability nargin, each transient state can be obtained in power grid transient rotor angle stability quantitative evaluation in step 52
The corresponding new energy station feeder line excision combination of angle stability nargin.
Using power grid transient rotor angle stability quantitative evaluation as calculating task, by all calculating tasks, transient rotor angle stability
The set that calculating task of the nargin greater than 0 forms is denoted as E, and calculating task of the transient rotor angle stability nargin less than or equal to 0 forms
Set is denoted as F.
Detailed process is as follows for step 53:
It is equal to 0 and P when all transient rotor angle stability nargin that assessment obtains are respectively less thanulNot equal to Pmax, i.e. E is empty and Pul
Not equal to Pmax, enable Pul'=min [Pmax,(2Pul-Pll)]、P′ll=Pul, use Pul′、Pll' P is updated respectivelyul、PllIt (i.e. will be original
The upper limit as new lower limit, active resection section translates up), go to step 51；If E is empty and PulEqual to Pmax, then without
Method ensures S Transient angle stability by carrying out control to new energy station, terminates this method；
When all transient rotor angle stability nargin that assessment obtains are all larger than 0, i.e. F is sky, enables Pul'=Pll、Pul'=max
[0,(2Pll-Pul)], use Pul′、Pll' P is updated respectivelyul、Pll(i.e. using original lower limit as the new upper limit, active resection area
Between downwards translate), go to step 51；
When the transient rotor angle stability nargin part that assessment obtains is less than or equal to 0, partially larger than 0, i.e. E and F all non-emptys, by Pul
Transient rotor angle stability nargin is set to greater than active resection minimum value (i.e. P in the excision combination of 0 corresponding new energy station feeder lineul
It is set to active resection minimum value in the corresponding feeder line excision combination of calculating task in E), by PllIt is set to transient rotor angle stability nargin
Less than active resection maximum value (i.e. P in equal 0 corresponding new energy station feeder line excision combinationllIt is corresponding to set calculating task in F
Active resection maximum value in feeder line excision combination)；If (Pul-Pll) < εp, then by PllThe excision of corresponding new energy station feeder line
Combination is as the excision combination of optimal feeder line；If (Pul-Pll)≥εp, then step 51 is gone to.
The above method carries out emergent control performance indicator meter to the new energy station for participating in transient rotor angle stability emergent control
It calculates, new energy station is grouped according to emergent control performance indicator, and determine the priority of every group of active excision, passes through iteration meter
It calculates, searches the new energy station feeder line excision optimum combination for meeting transient rotor angle stability requirement, realize new energy station ginseng
With the method for transient rotor angle stability emergent control, the transient state generator rotor angle of power grid after failure is ensured by excision new energy station feeder line
Stability, Optimal Decision-making space are huge；The above method proposes initial active resection section evaluation method, improves search
Efficiency；The above method is divided into one group as a decision variable, greatly by the close new energy station of emergent control performance indicator
The dimension in amplitude reduction Optimal Decision-making space, improves the calculating speed of Optimal Decision-making, can meet extensive new energy and participate in temporarily
Requirement of the state angle stability emergent control Optimal Decision-making to real-time.
The system that new energy participates in transient rotor angle stability emergent control, including,
New energy station obtains module: obtaining the new energy station for participating in transient rotor angle stability emergent control；
Emergent control performance Index Calculation module: it calculates new energy station and the emergent control performance of transient rotor angle stability is referred to
Mark；
Grouping module: according to emergent control performance indicator and preset rules, being grouped new energy station, determine every group it is active
The priority of excision；
Initial module: it calculates new energy station and participates in the initial active resection section of transient rotor angle stability emergent control；
Optimal feeder line excision combination determining module: it according to active resection section and active excision priority, obtains several
New energy station feeder line excision combination, if meeting the active resection minimum value of transient rotor angle stability requirement and being unsatisfactory for transient state function
The difference of the active resection maximum value of angle stability requirement is less than the computational accuracy of setting, then active resection minimum value is corresponding
New energy station feeder line excision combination is as the excision combination of optimal feeder line；Otherwise active resection section is iterated to calculate, this is repeated
Module process.
A kind of computer readable storage medium storing one or more programs, one or more of programs include referring to
Enable, described instruction when executed by a computing apparatus so that the calculatings equipment new energy participation transient rotor angle stability emergent control
Method.
A kind of calculating equipment, including one or more processors, memory and one or more program, one of them or
Multiple programs store in the memory and are configured as being executed by one or more of processors, one or more of
Program includes the instruction for participating in the method for transient rotor angle stability emergent control for executing new energy.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The above is only the embodiment of the present invention, are not intended to restrict the invention, all in the spirit and principles in the present invention
Within, any modification, equivalent substitution, improvement and etc. done, be all contained in apply pending scope of the presently claimed invention it
It is interior.
Claims (10)
1. the method for new energy participation transient rotor angle stability emergent control, it is characterised in that: including,
Obtain the new energy station for participating in transient rotor angle stability emergent control；
New energy station is calculated to the emergent control performance indicator of transient rotor angle stability；
According to emergent control performance indicator and preset rules, new energy station is grouped, determines the priority of every group of active excision；
Calculate the initial active resection section of new energy station；
According to active resection section and active excision priority, the excision combination of several new energy stations feeder line is obtained, if meeting
The active resection minimum value that transient rotor angle stability requires and the active resection maximum value for being unsatisfactory for transient rotor angle stability requirement
Difference be less than the computational accuracy of setting, then by the corresponding new energy station feeder line excision combination of active resection minimum value as most
Excellent feeder line excision combination；Otherwise active resection section is iterated to calculate, this step is repeated.
2. according to right to go 1 described in new energy participate in transient rotor angle stability emergent control method, it is characterised in that: obtain
The process of new energy station for participating in transient rotor angle stability emergent control is,
Power grid transient rotor angle stability quantitative evaluation is carried out, transient rotor angle stability nargin and generator dominant pattern are obtained；
It is less than or equal to 0 in response to transient rotor angle stability nargin, determines the corresponding oscillation center position of generator dominant pattern；
The branch combinations of branch composition where obtaining oscillation center position；
Using branch combinations as cut set, connected network where generator in the neck pre-group of generator dominant pattern is obtained；
The new energy station for participating in transient rotor angle stability emergent control is obtained from connected network.
3. the method that new energy according to claim 1 participates in transient rotor angle stability emergent control, it is characterised in that: urgent
Control performance standard calculation formula is,
Wherein, N is the new energy station set for participating in transient rotor angle stability emergent control, aiIt is new energy station i to transient state generator rotor angle
Stable emergent control performance indicator, G are generator collection in the neck pre-group of generator dominant pattern, γjFor the ginseng of generator j
With the factor, zj,iFor the electrical distance between new energy station i grid entry point and generator j node.
4. the method that new energy according to claim 1 participates in transient rotor angle stability emergent control, it is characterised in that: new energy
Source station rule of classification is,
Wherein, N is the new energy station set for participating in transient rotor angle stability emergent control, ai1、ai2、ai3Respectively new energy field
I1, i2, i3 stand to the emergent control performance indicator of transient rotor angle stability, α is parameter；
The new energy station for meeting above-mentioned formula is divided into one group, and ungratified new energy station is used as alone one group respectively；
According to the size of emergent control performance indicator, new energy station group is ranked up, big new of emergent control performance indicator
Group active excision priority in energy station is high.
5. the method that new energy according to claim 1 participates in transient rotor angle stability emergent control, it is characterised in that: initial
Active resection interval computation formula be,
Wherein, Pul、PllThe upper and lower limit in respectively active resection section, b are setup parameter, PmaxTo participate in transient rotor angle stability
The active excision total amount in the new energy station of emergent control, η are transient rotor angle stability nargin, AincFor acceleration area corresponding with η,
If retardation area corresponding with η is greater than 0, tdFor the corresponding duration of retardation area, otherwise tdTo accelerate the corresponding duration of area.
6. the method that new energy according to claim 1 participates in transient rotor angle stability emergent control, it is characterised in that: obtain
Optimal feeder line cuts off combined detailed process,
S1 uniform stepping) is carried out to active resection section, according to active excision priority, by the active resection of each gear
It is converted into the excision combination of new energy station feeder line；
S2) meter and the excision combination of new energy station feeder line, to power grid transient rotor angle stability quantitative evaluation；
S3 it) is unsatisfactory for transient rotor angle stability requirement in response to all assessment results, adjusts active resection section, by active excision
The section upper limit is measured as new active resection interval limit, goes to step S1；
Meet transient rotor angle stability requirement in response to all assessment results, adjust active resection section, by active resection area
Between lower limit as the new active resection section upper limit, go to step S1
In response to meeting the active resection minimum value of transient rotor angle stability requirement in all assessment results and being unsatisfactory for transient state function
The difference of the active resection maximum value of angle stability requirement is less than the computational accuracy of setting, the corresponding new energy of active resection minimum value
Source station feeder line excision combination is as the excision combination of optimal feeder line；
In response to meeting the active resection minimum value of transient rotor angle stability requirement in all assessment results and being unsatisfactory for transient state function
The difference of the active resection maximum value of angle stability requirement adjusts active resection section, will have not less than the computational accuracy of setting
Function resection minimum value is as the new active resection section upper limit, using active resection maximum value as new active resection
Interval limit goes to step S1.
7. the method that new energy according to claim 6 participates in transient rotor angle stability emergent control, it is characterised in that: stepping
Process is,
IfGreater than εp, then by [Pul,Pll] it is uniformly divided into n-1 shelves, total n gear, otherwise by [Pul,Pll] uniformly divide
ForShelves, altogetherA gear；Wherein, Pul、PllRespectively active resection section
Upper and lower limit, εpFor preset active excision accuracy of measurement.
8. the method that new energy according to claim 6 participates in transient rotor angle stability emergent control, it is characterised in that: active
Resection is converted into the combined process of new energy station feeder line excision,
If active resection PcIt is equal toThen by active excision priority all ginsengs in first m of new energy station group
Feeder line with transient rotor angle stability emergent control is as PcCorresponding new energy station feeder line excision combination, wherein Pi′For new energy
Source station group i ' is used for the active excision total amount of transient rotor angle stability emergent control；
IfBy active excision priority all participation transient state in first m of new energy station group
The feeder line combination of angle stability emergent control is denoted as M0, by majorized function obtain in m+1 new energy station groups withCorresponding new energy station feeder line excision combination M1, M0And M1For PcCorresponding new energy station feeder line excision group
It closes,
Majorized function formula is,
Wherein, Km+1For new energy station number in m+1 new energy station groups, JkIt is k-th in m+1 new energy station groups
New energy station is used for the feeder line number of transient rotor angle stability emergent control, Pm+1,k,j′It is k-th in m+1 new energy station groups
New energy station is used for active, the l of jth ' a feeder line of transient rotor angle stability emergent controlm+1,k,j′Indicate whether excision m+1
K-th of new energy station is used for jth ' a feeder line parameter of transient rotor angle stability emergent control in the group of position new energy station, etc.
In 1, excision is indicated, be equal to 0, expression is not cut off, Pm+1,minIt is used for for all new energy stations in m+1 new energy station groups
The active minimum value of the feeder line of transient rotor angle stability emergent control.
9. the method that new energy according to claim 6 participates in transient rotor angle stability emergent control, it is characterised in that: step
The process of S3 is,
It is respectively less than in response to all transient rotor angle stability nargin that assessment obtains and is equal to 0 and PulNot equal to Pmax, enable Pul'=min
[Pmax,(2Pul-Pll)]、Pll'=Pul, use Pul′、Pll' P is updated respectivelyul、Pll, go to step S1；
All transient rotor angle stability nargin obtained in response to assessment are all larger than 0, enable Pul'=Pll、Pul'=max [0, (2Pll-
Pul)], use Pul′、Pll' P is updated respectivelyul、Pll, go to step S1；
It is less than or equal to 0, partially larger than 0 in response to the transient rotor angle stability nargin part that assessment obtains, by PulIt is set to transient state generator rotor angle
Stability margin is greater than active resection minimum value in the excision combination of 0 corresponding new energy station feeder line, by PllIt is set to transient state generator rotor angle
Active resection maximum value in the 0 corresponding new energy station feeder line excision combinations such as stability margin is less than, if (Pul-Pll) < εp,
Then by PllOtherwise corresponding new energy station feeder line excision combination goes to step S1 as the excision combination of optimal feeder line；Wherein εp
For preset active excision accuracy of measurement.
10. the system of new energy participation transient rotor angle stability emergent control, it is characterised in that: including,
New energy station obtains module: obtaining the new energy station for participating in transient rotor angle stability emergent control；
Emergent control performance Index Calculation module: new energy station is calculated to the emergent control performance indicator of transient rotor angle stability；
Grouping module: according to emergent control performance indicator and preset rules, new energy station is grouped, determines every group of active excision
Priority；
Initial module: it calculates new energy station and participates in the initial active resection section of transient rotor angle stability emergent control；
Optimal feeder line excision combination determining module: according to active resection section and active excision priority, several new energy are obtained
Source station feeder line excision combination, if meeting the active resection minimum value of transient rotor angle stability requirement and to be unsatisfactory for transient state generator rotor angle steady
The difference of the active resection maximum value of provisioning request is less than the computational accuracy of setting, then by the corresponding new energy of active resection minimum value
Source station feeder line excision combination is as the excision combination of optimal feeder line；Otherwise active resection section is iterated to calculate, this module is repeated
Process.
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